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UNITED STATES PATENT OFFICE.

ORRIL R. CHAPLIN, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENT, TO FLEXIBLE SHOE FASTENING MAGHINEUOMPANY.

SHOE-NAIL WIRE.

SPECIFICATION forming part of Letters Patent No. 228,605, dated June 8, 1880. V

' Application filed November 15, 1879.

To all whom it may concern:

Be it known that I, ORRIL R. OHAPLIN, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Machines for Preparing Wire for Attaching Soles to Boots and Shoes. of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to a wire for attaching soles to boots and shoes which may be fed to the machine, which inserts it in the sole continuously from a reel, and be cut to the desired lengths by the machine, either before or after being driven into the sole; and it consists in forming upon the sides of said wire two or more series of corrugations or indentations oblique to the axis of said wire and in clined in opposite directions, as will be more fully described.

Figure 1 of the drawings is an elevation of a short piece of my improved sole-fastening wire drawn full natural size. Fig. 2 is asimilar elevation drawn to a scale four times the natural size; and Fig. 3 is a section, showing one of the nails driven into a sole drawn to an enlarged scale.

This improved wire sole-fastener is produced by first drawing a plain wire of the desired size, and then passing it between pressurerolls provided with suitable projections on their peripheries adapted to indent the wire, as shown at a a, those indentations in one row or series being arranged obliquely to the axis of the wire in one direction, while the indentations in the next contiguous row or series upon either side of the first-mentioned row or series are arranged obliquely to the axis of the wire in the opposite direction.

The object of my invention is the production ofa sole-fastener which shall embody the greatest holding capacity and be the least liable to work out of the sole in either direction.

I am well aware that several different kinds 4 5 of grooved, threaded, or roughened wire have been used to a considerableextent as a means of securing together the soles of boots and shoes but so far as my knowledge extends none are in use but what are easily driven or worked inward as the sole is worn away, so as to be troublesome to the feet of the wearer. This objection is entirely overcome by my improved wire rivet, the barbs or teeth, facing in opposite directions, effectually resisting any ordinary force applied to the end of the fastening to force it endwise in the sole, such as would be applied thereto in the ordinary wear of the boot or shoe.

Two, three, four, or more rows or series of indentations may be formed upon the periphery of the wire, said rows being arranged parallel with each other and with the axis of the wire, as shown; but I prefer four rows or series of such indentations, arranged equidistant from each other around the periphery of the wire, as adapted to produce the best result.

I do not claim, broadly, a grooved, corrugated, threaded, or roughened shoe nail or rivet, or a grooved, corrugated, threaded, or roughened wire for producing such nailorrivet; but

What I claim as new, and desire to secure by Letters Patent of the United States, is-

As an improved article of manufacture, a metal wire from which to produce fastenings for securing together the soles of boots and shoes, having formed upon its exterior surface three or more rows or series of teeth arranged obliquely to the axis of the wire in opposite directions, substantially as and for the purposes described.

Executed at Boston, Massachusetts, this 13th (layof November, A. D. 1879.

OBRIL R. OHAPLIN.

Witnesses:

E. A. HEMMENWAY, WALTER E. LOMBARD. 

